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flat assembler > High Level Languages > [solv]how to reserve an extra space at the end of a string?

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vivik



Joined: 29 Oct 2016
Posts: 379

[solv]how to reserve an extra space at the end of a string?

Something like this:

wchar_t* filename = L"C:\\folder1\\folder2\\folder3\\",0,0,0,0,0,0,0,0;

I need to reserve space for 16 more characters, how? I can just write another 16 characters of whatever, but I'd prefer them to be 0.


Last edited by vivik on 25 Feb 2018, 06:17; edited 1 time in total
Post 24 Feb 2018, 08:32
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alexfru



Joined: 23 Mar 2014
Posts: 60

"...\0\0\0"
Or if you use an array, making it big enough will work:
wchar_t filename[100] = L"C:\\folder1\\folder2\\folder3\\";
Post 24 Feb 2018, 09:15
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 15727
Location: (514107) 2015 BZ509

Use the constants that come with your OS. For Windows:

Code:
wchar_t filename[MAX_PATH] = L"C:\\folder1\\folder2\\folder3\\";

There is no sense using more than MAX_PATH since the OS won't be able to use it. And always check that whatever you add to the buffer won't overflow it past MAX_PATH. It can cause some terrible bugs if you assume that your path length + 16 characters will never overflow past MAX_PATH.
Post 24 Feb 2018, 09:40
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vivik



Joined: 29 Oct 2016
Posts: 379

It looks like this string ends up read-only. Can I make it writable? Compiler is VS2005.

I guess I'll just copy it somewhere for now, it's not important.
Post 24 Feb 2018, 13:54
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shoorick



Joined: 25 Feb 2005
Posts: 1586
Location: Ukraine

MAX_PATH may appear short for UNICODE functions. It is not bad to read this to clarify the subject.
Post 24 Feb 2018, 15:00
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rugxulo



Joined: 09 Aug 2005
Posts: 2279
Location: Usono (aka, USA)


vivik wrote:
It looks like this string ends up read-only. Can I make it writable? Compiler is VS2005.




readonly wrote:

wchar_t* filename = L"C:\\folder1\\folder2\\folder3\\",0,0,0,0,0,0,0,0;




writeable? wrote:

wchar_t filename[100] = L"C:\\folder1\\folder2\\folder3\\";

Post 24 Feb 2018, 22:30
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